×
In A Rare Case, Conjoined Twins Share A Brain And Can See Through Each Other’s Eyes | They Control Each Other's Limbs

In A Rare Case, Conjoined Twins Share A Brain And Can See Through Each Other’s Eyes | They Control Each Other's Limbs

They say that they can read each other's minds without speaking and describe it as "talking in our heads."

The Hogan twins portrayed in the documentary Inseparable are unique in the world. Their brains are joined at the head by a thalamic bridge, which offers them neurological talents that experts are only now beginning to grasp, reports CBC.

Krista and Tatiana Hogan were born in Vancouver, British Columbia on October 25, 2006, and have had a beautiful life. They are typical twelve-year-olds in Canada; they go to school, have a favorite pet, and are part of a huge, loving family determined to enjoy each day to the fullest.

Craniopagus twins that are united at the head are extremely rare—one in every 2.5 million. The vast majority die within 24 hours.



 

 

The twins' CT scan revealed that they could never be separated owing to the danger of catastrophic injury or death. The anatomy of the twins' brains distinguishes them from other people. Their brains are linked by a thalamic bridge, which connects one thalamus to the other. The thalamus relays sensory and motor impulses while also controlling consciousness.

Krista and Tatiana Hogan share touch and taste, and they can even control one other's limbs. Tatiana can see through both of Krista's eyes, whilst Krista can only see through one of Krista's. Since the thalamus acts as a relay station, the doctors believe it is perfectly plausible that sensory data received by one girl may cross that bridge into the brain of the other. One girl drinks, while another feels it, per New York Times.



 

 

The twins claim they can read each other's minds without speaking. They describe it as "talking in our heads." The girls suffer from diabetes and epilepsy. They follow a strict routine of medicines, blood tests, and daily insulin injections. The twins attend a conventional school and began Grade 6 in September 2017. Despite scholastic delays, they are learning to read, write, and do basic arithmetic.

Felicia Simms, their mother, was 20 years old with two little children, living alone in a small apartment and reliant on the Canadian assistance system for financial support when she discovered the odd nature of her pregnancy. Brendan Hogan, the father of her first child, was still in an on-again, off-again relationship with her, but they frequently argued over his drinking and drug use, and he worked only irregularly, in construction or at a meatpacking factory.



 

 

Simms wasn't prepared for the financial and emotional responsibility of having craniopagus twins. However, she did not terminate her pregnancy and is not the mother of five children, including Krista and Tatiana. The personalities of the girls are completely different. Tatiana is lively, conversational, and high-spirited, whereas Krista is calmer, more relaxed, and enjoys telling jokes. 

The girls ride a specially designed bicycle, toboggan down slopes, cross country ski, and are learning to swim as part of their physical rehabilitation. 

References:

https://www.cbc.ca/cbcdocspov/features/the-hogan-twins-share-a-brain-and-see-out-of-each-others-eyes

https://www.nytimes.com/2011/05/29/magazine/could-conjoined-twins-share-a-mind.html

Cover Image Source: ABC News/Youtube